Aviditi packing list/invoice enclosed envelope. Pressure sensitive packing list envelopes secure and protect documents that are attached to the outside of shipments. Use these 2 mil poly envelopes to attach packing lists and/or invoices to the outside of packages. Hot melt adhesive backing provides strong adhesion to paper and corrugated products. Envelopes open along the first dimension. Measures 4-1/2-inches length by 5-1/2-inches width.